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Finding the Fourth Proportional to 281,669, 422,529.54 and 92,130.44

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Solution

The fourth proportional to 281,669, 422,529.54 and 92,130.44 is: 138,204.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,669 : 422,529.54 = 92,130.44 : x
  2. Step 2: Convert to fraction form
    281,669/422,529.54 = 92,130.44/x
  3. Step 3: Cross multiply
    281,669x = 422,529.54 × 92,130.44
  4. Step 4: Simplify right side
    281,669x = 38,927,832,433.20
  5. Step 5: Solve for x
    x = 38,927,832,433.20/281,669
  6. Step 6: Final answer
    x = 138,204.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.